不同排水条件下非饱和土中柱孔扩张问题的解析分析1)
周凤玺, 牟占霖, 杨汝贤, 张雅森

ANALYTICAL ANALYSIS ON THE EXPANSION OF CYLINDRICAL CAVITY IN UNSATURATED SOILS UNDER DIFFERENT DRAINAGE CONDITIONS1)
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图16 不同初始径向有效应力下塑性区径向有效应力与$r/a$和$b$之间的变化
Fig.16 Radial effective stress of the plastic zone and the change between $r/a$ and $b$ under different initial radial effective stress